Bag-machine.



No. 678,788. Patented luly I6. [90L 6. MILLHISEB 81. C. L. A. DOEPPE.

BAG MACHINE.

{Application filed June 9, 1900.) ("9 Model.) 2 Sheets-Sheet I.

w/r/vEssEs //v VENTOHJ,

$724 .61 A TTORNEYJ.

THE {mums Prrms 00.. mom-umo. wAsnmnmvv, u. c.

No. 678,788. Patented July 16, mm. c. MILLHISER &. c. L. A. DUEPPE.

BAG MACHINE.

(Applicatiqn filed Jupe 9, 1900;

2 Sheets-Sheet 2.

(No Model.)

485 A rromvzm.

o. WASHINQTON. D. c.

Unwrap Sraorns Persia *r @rri'cn.

CLARENCE MILLHISER AND CHARLES L. A. DOEPPE, OF RICHMOND, VIR- GINIA, ASSIGNORS TO THE MILLHISER MANUFACTURING COIdPANY,

OF SAME PLACE.

BAG- MAGHINE.

SPECIFICATION forming part of Letters Patent No. 678,788, dated July 16, 1901.

Application filed June 9, 1900.

T0 rtZZ whom it may concern:

Be it known that we, CLAEENoE MILLHISER and CHARLES L. A. DoEPPE, citizens of the United States of America, and residents of Richmond city, county of Henrico, State of Virginia, have invented certain new and use ful Improvements in Bag-Machines, of which the following is a specification.

Our invention relates to folders for cloth, paper, and similar materials; and it has for its object the provision of means for folding large portions of fabrics such as are used in the manufacture of large bags, sacks, &c., and it may be advantageously used in connection with machines for making such bags and sacks.

In order that the operation and use of our improved folder may be readily understood, we shall describe it in connection with a machine for making bags, the operation of such a machine being, briefly stated, as follows: The forward end portion of a continuous strip of fabric is fed beneath a cutter onto a folding device, the quantity of fabric fed onto the folding device being sufficient for the formation of a bag. The cutter then severs from the strip of fabric the portion lying upon the folding device. The folding device then folds the severed portion of fabric in such a manner that it maybe sewed on two ofits open edges to form a bag. The folded portion of fabric is then transferred to sewing mechanism which is so arranged that it may sew the folded portion of fabric to form a bag.

In the drawings which accompany and form a part of this specification and in which like numerals refer to like parts in different views, Figure I is a plan of a bag-machine having our improved folder incorporated in it. Fig. II is a side elevation of the same machine. Fig. III is a view in perspective of our improved folder.

In Figs. 1 and II, 8 and 11 are the feed-rolls which feed the continuous strip-of fabric forward to the cutters 19.

12 is the presenting-roll, whose function it is to present the end of the continuous strip of fabric in proper condition to the cutters. After the forward end of the continuous strip of fabric passes the cutters it falls upon the Serial No. 19,713. (No model.)

intermittently-inoving endless bands 27, Figs. I and III, which, moving at a speed a little greater than that of the continuous strip of fabric, feed the forward end of the said strip into position and perfectlyflat on the sewingtable 45. It will be seen thatsince the endless bands 27 travel at a speed greater than that of the continuous strip of fabric that part of the latter which lies upon the said endless bands 27 will be smoothed out flat as it advances. I As soon as a sufficient lengthof the continuous strip of fabric has been fed onto the folder the feed-rolls 8 and 11 and the endless bands 27 come to rest. The cutter 19 then descends and severe from the continuous strip of fabric the portion lying on the folder.

as is a clainping-blade whose only motion, and that a small one, is vertical. During the feeding of the fabric onto the folder the clamping-blade 44 is raised about an eighth of an inch from the bands 27. As soon as or immediately before the portion of fabric is severed from the continuous strip the clampingblade 44: descends and clamps the portion of fabric about its middle to the table 4-5, over which the endless bands 27 pass. The portion of fabric having been severed from the continuous strip and having been clamped to the table e5, the platen 46, which it will be seen has a series of fingers or blades which lie between the endless bands 27, now rising and advancing toward and over the clamping-blade 4st folds the half of the portion of fabric which lies upon it (the platen) over upon the other half, the fold being formed along the edge of the clam ping-blade 44-. The platen then returns to its original position, as shown in the drawings. The clamping blade 44 now rises just enough totake the pressure off the fabric lying beneath it. The transferring device 47 then engages the end of the folded portion of fabric and transfers it to the sewing mechanism 49. It will be seen that the clamping-blade 44: does not interfere with the movement of the folded portion of fabric as it is transferred in a direction in line with the said blade. In Fig. I

a portion of fabric is shown as folded and about to be transferred to the sewing mechanism. In Fig. III the forward end of the continuous strip of fabric is shown as just advancing beyond the cutter 19.

The endless bands 27 pass over pulleys 28 and 28, the said pulleys 28 being mounted on the shaft 29, which is given intermittent motion by means of an intermittent silent feed 30, which is operated by the rack-rod 31 and the crank 32, fixed on the shaft 33, this shaft receiving its motion from the shaft 26 through the medium of bevel-gears. In Fig. III the silent feed 30 has been removed, so that the different parts of the folder may be clearly seen.

The platen 46 is supported by the arms 63, which slide in sleeve 64:, the latter being supported on rods 65, which slide in vertical sleeves 66. The rods 65 carry at their lower ends the rollers 67, which bear against the cams 68, the latter as they revolve giving to the platen a reciprocating motion in a vertical direction. The platen is given motion in a horizontal direction by means of the levers 69,pivoted at 70 and connected at their lower ends to the rods 71, which slide in the guides 72 and carry at their other ends the rollers 73, which bear against the cams 74:, mounted on the shaft 37.

I The clamping-blade 44: is attached to the piece 50, (see Fig III), which is mounted on the vertical rod 52, which slides in a vertical sleeve 53, this red 52 being given a reciprocating motion in a vertical direction by means of a cam 5a, which bears against a roller 56, attached to the lever 55, one end of which is connected with the rod 52. The

downward movement of the clamping-blade 4:4 is assisted by the spring 51, which also causes the clamping-blade to bear with an down and up, a spring arranged to cause the I clamping-blade to descend and to bear with an elastic pressure upon the portion of fabric, a platen to lift and fold that part of the portion of fabric which lies upon it over the clamping-blade and onto that part which lies upon the table, means for operating the platen, and means for raising the clamp to unclamp the folded portion of fabric from the table.

2. Folding mechanism to fold a portion of fabric, and consisting of a narrow clampingblade to clamp a portion of fabric about its middle to a table and having the two motions down and up, means for operating the clamp to clamp the portion of fabric to the table and to release the portion of fabric when folded from the table, a platen to lift and fold that part of the portion of fabric which lies upon it over the clamping-blade and onto that part which lies upon the table, and means for operating the platen.

Signed by us at Richmond this 30th day of May, 1900.

CLARENCE MILLHISER. CHARLES L. A. DOEPPE.

Witnesses:

ARTHUR SORIVENOR, O. W. THROCKMORTON. 

